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Safety Relief Valve NSN 4820-01-423-3448

Item Description

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

NSN 4820-01-423-3448 NSN: 4820-01-423-3448

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Features and Characteristics

Disk Loading Method
Spring
Bolt Hole Quantity
4 all ends
Maximum Operating Temp
100.0 degrees fahrenheit single response
End Application
Nimitz class cvn
Valve Operation Method
Automatic or manual
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Valve Size
0.500 inches
Maximum Operating Pressure
275.0 pounds per square inch single response
Opening Pressure Setting
165.0 pounds per square inch
Outside Diameter
4.250 inches 1st end
Thickness
0.562 inches 1st end
First Connection Face To Centerline Distance
3.562 inches
Bolt Hole Diameter
0.625 inches all ends
Second Connection Face To Centerline Distance
3.250 inches
Bolt Circle Diameter
3.125 inches 1st end
Flange Face Design
Raised straight all ends
Raised Face Height
0.062 inches 1st end
Raised Face Diameter
1.938 inches 1st end
Material
Steel comp 316 stem
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
014233448
NSN
4820014233448

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
UCNCNN08CCCE
Cage Code:
5P967
Status:
A
MSDS:
Part Number:
DNX62FF-08 1/2X1
Cage Code:
65079
Status:
A
MSDS:
Part Number:
DNX62FF-1/2X1 165PSI
Cage Code:
65079
Status:
A
MSDS:
Part Number:
DNX62FF-8-16 SET 165PSI
Cage Code:
65079
Status:
A
MSDS:
Part Number:
DNX62FF-8-16
Cage Code:
65079
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481400000
  • NAICS: 332911
  • SITC: 74740
  • Description: Safety or relief valves
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-01-423-3448
What are the manufacturers of nsn 4820014233448?
Does this nsn 4820014233448 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014233448
A valve designed to automatically release excessive pressures. it is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. it is not designed for regulation of continuously fluctuating loads. it may be inline or cartridge (manifold) design. excludes valve (1), relief, pressure and temperature.
Does nsn 4820014233448 contain any precious metals?
No precious metal content.
Does nsn 4820014233448 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014233448?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
05488
FIIG:
A046B0
App. Key:
AP
Cond. Code:
1
Status:
A

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